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Role of Plant Growth Regulators in Abiotic Stress Tolerance

  • K. K. Upreti
  • Maryada Sharma
Chapter

Abstract

Endogenous plant growth regulators play an important role in regulating plant responses to abiotic stress by sensitizing growth and developmental processes. While the physiological and molecular mechanisms linked to the role of ABA and cytokinins in stress tolerance are well explained, there is growing interest to elucidate the associations of auxins, ethylene, gibberellins, brassinosteroids, and polyamines in stress tolerance mechanism and also on possible cross talk mechanism among different growth regulators during stress tolerance acquisition. Identification and characterization of the gene regulating synthesis of different endogenous growth regulators and recent progresses on hormonal signaling, mutant research, and physiological actions have provided scope for manipulating their biosynthetic pathways for developing transgenic crop plants with enhanced abiotic stress tolerance. Researches have also provided some leads in exploiting the potential of growth regulators in enhancing the resistance to abiotic stresses of crops.

Keywords

Abiotic Stress Salt Stress Drought Stress Stress Tolerance Cold Stress 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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© Springer India 2016

Authors and Affiliations

  1. 1.Division of Plant Physiology and BiochemistryICAR-Indian Institute of Horticultural ResearchBengaluruIndia

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